/*
* @(#)$Id: SmartTransformerFactoryImpl.java,v 1.7 2003/01/30 18:46:14 mkwan Exp $
*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xalan" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 2001, Sun
* Microsystems., http://www.sun.com. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* @author G. Todd Miller
*
*/
package org.apache.xalan.xsltc.trax;
import javax.xml.transform.ErrorListener;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.URIResolver;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TemplatesHandler;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.xml.sax.XMLFilter;
/**
* Implementation of a transformer factory that uses an XSLTC
* transformer factory for the creation of Templates objects
* and uses the Xalan processor transformer factory for the
* creation of Transformer objects.
*/
public class SmartTransformerFactoryImpl extends SAXTransformerFactory
{
private TransformerFactory _xsltcFactory = null;
private TransformerFactory _xalanFactory = null;
private TransformerFactory _currFactory = null;
private ErrorListener _errorlistener = null;
private URIResolver _uriresolver = null;
/**
* implementation of the SmartTransformerFactory. This factory
* uses org.apache.xalan.xsltc.trax.TransformerFactory
* to return Templates objects; and uses
* org.apache.xalan.processor.TransformerFactory
* to return Transformer objects.
*/
public SmartTransformerFactoryImpl() { }
private void createXSLTCTransformerFactory() {
// set up error messages from each factory...
final String xsltcMessage =
"org.apache.xalan.xsltc.trax.SmartTransformerFactoryImpl "+
"could not create an "+
"org.apache.xalan.xsltc.trax.TransformerFactoryImpl.";
// try to create instance of XSLTC factory...
try {
Class xsltcFactClass = Class.forName(
"org.apache.xalan.xsltc.trax.TransformerFactoryImpl");
_xsltcFactory = (org.apache.xalan.xsltc.trax.TransformerFactoryImpl)
xsltcFactClass.newInstance();
}
catch (ClassNotFoundException e) {
System.err.println(xsltcMessage);
}
catch (InstantiationException e) {
System.err.println(xsltcMessage);
}
catch (IllegalAccessException e) {
System.err.println(xsltcMessage);
}
_currFactory = _xsltcFactory;
}
private void createXalanTransformerFactory() {
final String xalanMessage =
"org.apache.xalan.xsltc.trax.SmartTransformerFactoryImpl "+
"could not create an "+
"org.apache.xalan.processor.TransformerFactoryImpl.";
// try to create instance of Xalan factory...
try {
Class xalanFactClass = Class.forName(
"org.apache.xalan.processor.TransformerFactoryImpl");
_xalanFactory = (org.apache.xalan.processor.TransformerFactoryImpl)
xalanFactClass.newInstance();
}
catch (ClassNotFoundException e) {
System.err.println(xalanMessage);
}
catch (InstantiationException e) {
System.err.println(xalanMessage);
}
catch (IllegalAccessException e) {
System.err.println(xalanMessage);
}
_currFactory = _xalanFactory;
}
public void setErrorListener(ErrorListener listener)
throws IllegalArgumentException
{
_errorlistener = listener;
}
public ErrorListener getErrorListener() {
return _errorlistener;
}
public Object getAttribute(String name)
throws IllegalArgumentException
{
// GTM: NB: 'debug' should change to something more unique...
if ((name.equals("translet-name")) || (name.equals("debug"))) {
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
return _xsltcFactory.getAttribute(name);
}
else {
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
return _xalanFactory.getAttribute(name);
}
}
public void setAttribute(String name, Object value)
throws IllegalArgumentException {
// GTM: NB: 'debug' should change to something more unique...
if ((name.equals("translet-name")) || (name.equals("debug"))) {
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
_xsltcFactory.setAttribute(name, value);
}
else {
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
_xalanFactory.setAttribute(name, value);
}
}
/**
* javax.xml.transform.sax.TransformerFactory implementation.
* Look up the value of a feature (to see if it is supported).
* This method must be updated as the various methods and features of this
* class are implemented.
*
* @param name The feature name
* @return 'true' if feature is supported, 'false' if not
*/
public boolean getFeature(String name) {
// All supported features should be listed here
String[] features = {
DOMSource.FEATURE,
DOMResult.FEATURE,
SAXSource.FEATURE,
SAXResult.FEATURE,
StreamSource.FEATURE,
StreamResult.FEATURE
};
// Inefficient, but it really does not matter in a function like this
for (int i=0; i<features.length; i++) {
if (name.equals(features[i])) return true;
}
// Feature not supported
return false;
}
public URIResolver getURIResolver() {
return _uriresolver;
}
public void setURIResolver(URIResolver resolver) {
_uriresolver = resolver;
}
public Source getAssociatedStylesheet(Source source, String media,
String title, String charset)
throws TransformerConfigurationException
{
if (_currFactory == null) {
createXSLTCTransformerFactory();
}
return _currFactory.getAssociatedStylesheet(source, media,
title, charset);
}
/**
* Create a Transformer object that copies the input document to the
* result. Uses the org.apache.xalan.processor.TransformerFactory.
* @return A Transformer object.
*/
public Transformer newTransformer()
throws TransformerConfigurationException
{
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
if (_errorlistener != null) {
_xalanFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xalanFactory.setURIResolver(_uriresolver);
}
_currFactory = _xalanFactory;
return _currFactory.newTransformer();
}
/**
* Create a Transformer object that from the input stylesheet
* Uses the org.apache.xalan.processor.TransformerFactory.
* @param source the stylesheet.
* @return A Transformer object.
*/
public Transformer newTransformer(Source source) throws
TransformerConfigurationException
{
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
if (_errorlistener != null) {
_xalanFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xalanFactory.setURIResolver(_uriresolver);
}
_currFactory = _xalanFactory;
return _currFactory.newTransformer(source);
}
/**
* Create a Templates object that from the input stylesheet
* Uses the org.apache.xalan.xsltc.trax.TransformerFactory.
* @param source the stylesheet.
* @return A Templates object.
*/
public Templates newTemplates(Source source)
throws TransformerConfigurationException
{
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
if (_errorlistener != null) {
_xsltcFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xsltcFactory.setURIResolver(_uriresolver);
}
_currFactory = _xsltcFactory;
return _currFactory.newTemplates(source);
}
/**
* Get a TemplatesHandler object that can process SAX ContentHandler
* events into a Templates object. Uses the
* org.apache.xalan.xsltc.trax.TransformerFactory.
*/
public TemplatesHandler newTemplatesHandler()
throws TransformerConfigurationException
{
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
if (_errorlistener != null) {
_xsltcFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xsltcFactory.setURIResolver(_uriresolver);
}
return ((SAXTransformerFactory)_xsltcFactory).newTemplatesHandler();
}
/**
* Get a TransformerHandler object that can process SAX ContentHandler
* events based on a copy transformer.
* Uses org.apache.xalan.processor.TransformerFactory.
*/
public TransformerHandler newTransformerHandler()
throws TransformerConfigurationException
{
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
if (_errorlistener != null) {
_xalanFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xalanFactory.setURIResolver(_uriresolver);
}
return ((SAXTransformerFactory)_xalanFactory).newTransformerHandler();
}
/**
* Get a TransformerHandler object that can process SAX ContentHandler
* events based on a transformer specified by the stylesheet Source.
* Uses org.apache.xalan.processor.TransformerFactory.
*/
public TransformerHandler newTransformerHandler(Source src)
throws TransformerConfigurationException
{
if (_xalanFactory == null) {
createXalanTransformerFactory();
}
if (_errorlistener != null) {
_xalanFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xalanFactory.setURIResolver(_uriresolver);
}
return
((SAXTransformerFactory)_xalanFactory).newTransformerHandler(src);
}
/**
* Get a TransformerHandler object that can process SAX ContentHandler
* events based on a transformer specified by the stylesheet Source.
* Uses org.apache.xalan.xsltc.trax.TransformerFactory.
*/
public TransformerHandler newTransformerHandler(Templates templates)
throws TransformerConfigurationException
{
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
if (_errorlistener != null) {
_xsltcFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xsltcFactory.setURIResolver(_uriresolver);
}
return
((SAXTransformerFactory)_xsltcFactory).newTransformerHandler(templates);
}
/**
* Create an XMLFilter that uses the given source as the
* transformation instructions. Uses
* org.apache.xalan.xsltc.trax.TransformerFactory.
*/
public XMLFilter newXMLFilter(Source src)
throws TransformerConfigurationException {
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
if (_errorlistener != null) {
_xsltcFactory.setErrorListener(_errorlistener);
}
if (_uriresolver != null) {
_xsltcFactory.setURIResolver(_uriresolver);
}
Templates templates = _xsltcFactory.newTemplates(src);
if (templates == null ) return null;
return newXMLFilter(templates);
}
/*
* Create an XMLFilter that uses the given source as the
* transformation instructions. Uses
* org.apache.xalan.xsltc.trax.TransformerFactory.
*/
public XMLFilter newXMLFilter(Templates templates)
throws TransformerConfigurationException {
try {
return new org.apache.xalan.xsltc.trax.TrAXFilter(templates);
}
catch(TransformerConfigurationException e1) {
if (_xsltcFactory == null) {
createXSLTCTransformerFactory();
}
ErrorListener errorListener = _xsltcFactory.getErrorListener();
if(errorListener != null) {
try {
errorListener.fatalError(e1);
return null;
}
catch( TransformerException e2) {
new TransformerConfigurationException(e2);
}
}
throw e1;
}
}
}